Northern Elastomeric Incorporated (NEI) NEI Northern Elastomeric Incorporated (NEI) was founded in Brentwood, NH by Tom Zickell and Mat BockhIn 1999 NEI became a joint venture with Owens Corning. This high successful combination has been able to unite Owens Corning’s brand name and system approach with NEI’s innovative culture and self-adhesive expertise.https://www.owenscorning.com/en-us/nei-act